1361230763765 has 4 divisors (see below), whose sum is σ = 1633476916524. Its totient is φ = 1088984611008.

The previous prime is 1361230763759. The next prime is 1361230763777. The reversal of 1361230763765 is 5673670321631.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 224689272196 + 1136541491569 = 474014^2 + 1066087^2 .

It is a cyclic number.

It is not a de Polignac number, because 1361230763765 - 2¹⁸ = 1361230501621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136123076372 + ... + 136123076381.

It is an arithmetic number, because the mean of its divisors is an integer number (408369229131).

Almost surely, 2^{1361230763765} is an apocalyptic number.

It is an amenable number.

1361230763765 is a deficient number, since it is larger than the sum of its proper divisors (272246152759).

1361230763765 is an equidigital number, since it uses as much as digits as its factorization.

1361230763765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272246152758.

The product of its (nonzero) digits is 2857680, while the sum is 50.

The spelling of 1361230763765 in words is "one trillion, three hundred sixty-one billion, two hundred thirty million, seven hundred sixty-three thousand, seven hundred sixty-five".